125 Years of Registration Labels in Austria
Austrian Registered Post Rates, 1850 - 2002
Austro-Hungarian
Army (Military Mail) 1914-1918
Fiume: Stamps and Postal History 1918-1924
Postal history of Austria
Postal Rates - Transition of the Austrian Post to the Reichspost in 1938
Austria Philatelic Society (USA)
Austrian Philatelic Society (GB)
Öphila OHG (Auctions)
J. Schlosser
R. Schneider Stamps